Average Weather in December in Överum Sweden
Daily high temperatures decrease by 4°F, from 38°F to 34°F, rarely falling below 23°F or exceeding 47°F.
Daily low temperatures decrease by 4°F, from 30°F to 26°F, rarely falling below 11°F or exceeding 40°F.
For reference, on July 21, the hottest day of the year, temperatures in Överum typically range from 53°F to 71°F, while on February 9, the coldest day of the year, they range from 24°F to 33°F.
Average High and Low Temperature in December
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in December
The month of December in Överum experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 73% throughout the month.
The clearest day of the month is December 27, with clear, mostly clear, or partly cloudy conditions 29% of the time.
For reference, on November 27, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 75%, while on July 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 56%.
Cloud Cover Categories in December
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Överum, the chance of a wet day over the course of December is gradually decreasing, starting the month at 27% and ending it at 24%.
For reference, the year's highest daily chance of a wet day is 30% on August 18, and its lowest chance is 16% on March 2.
Over the course of December in Överum, the chance of a day with only rain decreases from 21% to 15%, the chance of a day with mixed snow and rain remains an essentially constant 4% throughout, and the chance of a day with only snow increases from 3% to 5%.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Överum is gradually decreasing, starting the month at 1.3 inches, when it rarely exceeds 2.2 inches or falls below 0.5 inches, and ending the month at 0.9 inches, when it rarely exceeds 1.9 inches or falls below 0.1 inches.
Average Monthly Rainfall in December
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during December in Överum is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 1.0 inches or falling to 0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in December
Over the course of December in Överum, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 24 minutes, implying an average daily decrease of 48 seconds, and weekly decrease of 5 minutes, 36 seconds.
The shortest day of the month is December 22, with 6 hours, 27 minutes of daylight and the longest day is December 1, with 6 hours, 59 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Överum is 8:14 AM on December 1 and the latest sunrise is 27 minutes later at 8:40 AM on December 28.
The earliest sunset is 3:05 PM on December 15 and the latest sunset is 10 minutes later at 3:15 PM on December 31.
Daylight saving time is observed in Överum during 2018, but it neither starts nor ends during December, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 3:51 AM and sets 18 hours, 11 minutes later, at 10:01 PM, while on December 21, the shortest day of the year, it rises at 8:39 AM and sets 6 hours, 28 minutes later, at 3:06 PM.
Sunrise & Sunset with Twilight in December
The chance that a given day will be muggy in Överum is essentially constant during December, remaining around 0% throughout.
For reference, on August 1, the muggiest day of the year, there are muggy conditions 1% of the time, while on September 19, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in December
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Överum is essentially constant during December, remaining within 0.2 miles per hour of 7.1 miles per hour throughout.
For reference, on January 6, the windiest day of the year, the daily average wind speed is 7.3 miles per hour, while on July 14, the calmest day of the year, the daily average wind speed is 5.3 miles per hour.
Average Wind Speed in December
Wind Direction in December
Överum is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Överum is gradually decreasing during December, falling by 3°F, from 42°F to 39°F, over the course of the month.
Average Water Temperature in December
The growing season in Överum typically lasts for 5.1 months (158 days), from around May 5 to around October 10, rarely starting before April 17 or after May 23, and rarely ending before September 20 or after November 1.
The month of December in Överum is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in December
The average accumulated growing degree days in Överum are essentially constant during December, remaining around 1,310°F throughout.
Growing Degree Days in December
The average daily incident shortwave solar energy in Överum is essentially constant during December, remaining around 0.3 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 0.3 kWh on December 20.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Överum are 57.989 deg latitude, 16.314 deg longitude, and 272 ft elevation.
The topography within 2 miles of Överum contains only modest variations in elevation, with a maximum elevation change of 325 feet and an average elevation above sea level of 273 feet. Within 10 miles contains only modest variations in elevation (676 feet). Within 50 miles contains significant variations in elevation (1,138 feet).
The area within 2 miles of Överum is covered by trees (78%), within 10 miles by trees (70%) and cropland (19%), and within 50 miles by trees (49%) and water (37%).
This report illustrates the typical weather in Överum year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Överum.
For each station, the records are corrected for the elevation difference between that station and Överum according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Överum is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Överum and a given station.
The stations contributing to this reconstruction are: Hultsfred Airport (32%, 59 kilometers, southwest); Linköping City Airport (31%, 59 kilometers, northwest); Norrköping Airport (27%, 66 kilometers, north); and Visby Airport (10%, 126 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .